How much rpm

[Eric09LTZ]

Hey guys and gals ! I have an 09 tahoe with a stage 2 tsp custom truck cam and have gotten a custom dyno tune . I have ls7 lifters , ls6 springs , DOD delete , ls2 timing sprocket and guides . Hardened push rods and the cam is a high lift 212/218,.600/.600 ,112 LSA, 110ICL . My shift points after getting the tune are 5500 rpm . I don’t have intake or exhaust . Would I get much more power after 5500 and would it be safe ? Thank you guys . I included a picture of my dyno sheet

 

[swathdiver]

Hey guys and gals ! I have an 09 tahoe with a stage 2 tsp custom truck cam and have gotten a custom dyno tune . I have ls7 lifters , ls6 springs , DOD delete , ls2 timing sprocket and guides . Hardened push rods and the cam is a high lift 212/218,.600/.600 ,112 LSA, 110ICL . My shift points after getting the tune are 5500 rpm . I don’t have intake or exhaust . Would I get much more power after 5500 and would it be safe ? Thank you guys . I included a picture of my dyno sheet

View attachment 249146

My stock motor shifts at around 5800 rpms with its BlackBear tune. So yes, a cam like that needs to rev to reveal its power but not much more over 6000 since a stock 6L80 is limited to 6200 RPMs.

Do you have before and after pulls? Any track time? What gears? My eyes aren't good enough to read the sheet, what does it say?

 

[Joseph Garcia]

My motor shifts at 5800, as well, with a BlackBear tune.

 

[Eric09LTZ]

My stock motor shifts at around 5800 rpms with its BlackBear tune. So yes, a cam like that needs to rev to reveal its power but not much more over 6000 since a stock 6L80 is limited to 6200 RPMs.

Do you have before and after pulls? Any track time? What gears? My eyes aren't good enough to read the sheet, what does it say?

It was a mustang dyno , 4th gear pull , 271 hp , 284tq . He said it would get another 30-40 hp on a standard dyno . Everything on the truck is stock besides the listed upgrades

 

[avalonandl]

The Truck intake is tuned for torque. If you had a LS3 intake or MSD intake you could retune it.. But why...its a 6000 lb SUV

 

[kbuskill]

The Truck intake is tuned for torque. If you had a LS3 intake or MSD intake you could retune it.. But why...its a 6000 lb SUV

I wish I could find an EXTRA "TRUCKY" manifold.... lol

I love torque and HP doesn't really get me all that excited.

I wish someone made a Tuned Port injection style manifold for our LS engines. Something with super long intake runners to build that low end big block type of grunt.

I realize that I am in the minority on this though as most people like to rev their LS engines, but I drive a 6K lb long body Burb and have no desire to go real fast. I would love to be able to breath on the throttle and roast the tires at will though... lol

 

[avalonandl]

Eric- your safe to 6000 rpms with those lifters and I assume good valve springs. Heck you may be good to 6400 but your wasting fuel then.

 

[Eric09LTZ]

Eric- your safe to 6000 rpms with those lifters and I assume good valve springs. Heck you may be good to 6400 but your wasting fuel then.

Thank you . I’ve got the ls6 beehive springs .

 

[swathdiver]

I wish I could find an EXTRA "TRUCKY" manifold.... lol

I love torque and HP doesn't really get me all that excited.

I wish someone made a Tuned Port injection style manifold for our LS engines. Something with super long intake runners to build that low end big block type of grunt.

I realize that I am in the minority on this though as most people like to rev their LS engines, but I drive a 6K lb long body Burb and have no desire to go real fast. I would love to be able to breath on the throttle and roast the tires at will though... lol

That's cause you're a trucker! I know, my second Buick made 200 horsepower and 300 foot pounds of torque. My intercooled ones started out with 230-245 HP and 330-345 torque. My brain has a hard time liking to see horsepower numbers exceeding torque numbers, like the LS7.

If I ever get to build a custom engine, I'll keep the 243 heads for more torque over the 823s as I increase cubic inches to at least 372.33 cid.

 

[iamdub]

I wish I could find an EXTRA "TRUCKY" manifold.... lol

I love torque and HP doesn't really get me all that excited.

I wish someone made a Tuned Port injection style manifold for our LS engines. Something with super long intake runners to build that low end big block type of grunt.

I realize that I am in the minority on this though as most people like to rev their LS engines, but I drive a 6K lb long body Burb and have no desire to go real fast. I would love to be able to breath on the throttle and roast the tires at will though... lol

You wouldn't consider the LS style, more specifically your stock truck intake manifold to be a tuned port design? I think the runners are similar in length, if not longer than those of the old school TPI. They're just routed differently for a tighter, sleeker package.